Mold



Feb. 24, 1925.

R. P. M. DAVIS MOLD Filed July 20, 1922 5 Sheets-Sheet 1 Feb. 24, 1925. 1,527,674

I R. P. M. DAVIS MOLD Filed July 20, 1922 5 Sheets-Sh'egt 4.

Feb. 24, 1925.

1,527,674 R. P. M. DAVIS MOLD File uly 1922 5 Sheets-Sheet 5 tion Patented Feb. 24, 1925.

n r es ROY r. M. nnvrs, or MOUNT un on, rnn nsvnven rn.

MOLD.

Application filed July 20,

To all whom it may concern:

Be it known that ROY P. M. DAVIS, a citizen ot' the United States of r'in erica, residing at Mount Union in the county of Huntingdon and State of Pennsylvania, has in vented certain new and useful Improvements in Molds, of which the following is a specilication.

Mytinyention relates to machines for and method of making bricks and more particularly to means for removing brick from the molds.

The object of the invention is to automatically remove the brick from the mold as the moldand brick pass from beneath the slicker as illustrated and described in my Patent No. 1,498,614 granted June 24:, 1924-.

Other and lurther objects and advantages of the invention will be in part described and in part obvious as the specification is proceeded with.

In the accompanying drawings forming part of the specification:

Figure l is a side elevation of my inven- Figure 2 is an end View thereof;

Figure 3 is an enlarged detail View of mechanism for unloading the mold;

Figure 4 is a section on the line 4 4 of Figure 3;

Figure .5 is a section on the line .3 -5 of Figure Figure 6 is a sideelevation partly in section of the mold Figure 7 is a detail view showing the manner of placingthe pallets on themold;

Figure Sisa diagrammatic view showing the. diii crent steps required in unloading the molds;

' Figure 9 is a. detail plan of the upper mold section, and

Figure 10 is an end view, the trunnions and bearings being omitted.

Referring moreparticularly to the drawings wherein like reference characters indicate corresponding parts throughout the several views, 1 denotes a frame comprising base). and uprights or beams 3 and transverse beams 4: of any suitable shape such as I or Ubean'is.

The material from which the bricks are nurde, such as silica rock is fed by gravity from any suitable source of supply (not shown) into a pairof spaced hoppers 5 and 1922. Serial No. 576,299.

6 in turn supported on the frame 1 .bymeans of longitudinally disposed channel beams -7- and 8 which rest upon the transverse beams 4 between the hoppersf It will .be under stood that the beam7 supports {the hopper and'that the beam Ssupports the hopper 6 any suitable means (not shown) re ployed to secure these together. a V

Depending from the .U-Vbeams 7 and 8 re spectively and bolted thereto as at .9 and '10 are two pairs of arms 13-13 and 14 H which carry rollers 15-1 5., and .'l6-l6", the purpose of which will lbepresently 'described. Mounted i'or reciprocatory movement between vthe hoppers ,5 and 6 is a carriage 17 of angle iron skeleton construction comprising upright end posts or beams 18 and .19 and horizontally disposed upperside iheams respective parts 20 and 21 and lower bean1s'22 and 23. The

upper side beams 20 and21 rest upon the rollers 1515 and 16.16 and serve as tracks for the carriage 17 which is propelled toand fro between the hoppers :by any suit able means (not shown). Resting upon the lower beams 22 and 23 alretwo pairs or" mold supporting arms 24 and 24L,\t-he ends of which project laterally asrbestillustrated in Figure 1, to bring them in linefwithflthe discharge end of the hoppers or chutes ,and v6 during the travel of thecarriage 17.

Arranged at each side of the hoppers or conveyor chutes 5 and (Stand .in horizontal alignment therewith are two pairs of rotary slickers 2525 fixed to the lower end of the respective slicker shafts 27*27, in turn journalcd in and capable of slight vertical movement in upper bearings 29+;29, and lower bearings 3l-31. "The bearings 29-29 are bolted to the U-bcams land 8 and to the upperends of the arms l313 and 14-14by bolts 9 and 10 previously re ferred to, while the bearings 31f31'" a re bolted to the lower end of these arms 13l3 by means of bolts 33 and 341-.

Mounted in the upper bearings 2929 are short shafts Til-79 which telescope Within the upper end of the slicker shafts but are keyed for rotation therewith. These short shafts are jprovidedwith gears 35 and 36 mes-hing with. gears 3,7 and 38 on drive shafts 39 and l0, in turn driven by pulle s 41 and d2 connected With any suitable source of power (not shown). It will thus be seen that the slicker shafts are free to move up and down in their bearings without moving the gears out of mesh.

Two pairs of molds 43-h? which are positioned upon the projecting ends of the plates 2a2a' are filled with silicate oreor other suitable material for making bricks as the molds pass beneath the hoppers 5 and 6. Any suitable means (not shown) may be employed for automatically feeding a charge to the molds as the latter reach aligned position beneath the hoppers. As the shock of the descending charge is very great, some means must be provided for relieving the frame 1, tracks 20 and 21 and carriage 1. of the stresses incident to the dropping of the mud. This I accomplish by providing anvils or pedestals 45 and a6 provided with V rollers l7 and 4&8 at their upper ends arranged beneath and in line with the discharge end of the hoppers 5 and 6 respectively, but spac'edtherefrom. The rails 20' and 21 are notched 0r reoessed at predetermined points along their lower edges as at 49 and 50, so that the carriages will drop suiliciently to permit the projecting ends of the tables 2 l-2t to frictionally engage the rollers 47 and 48 as the ends of the tables pass beneath the hoppers during the travel of the carriages 17 to and fro on the wheels 15-15 and 16-16. Consequently when the charge descends from the hoppers 5 and 6 into the molds e8 l8 the shock Will be borne by the posts or pedestals, thus relieving the carriage and carriage supporting parts from undue strain.

As previously stated the slicker shafts are mounted for rotary as Well as vertical movement in the bearings 29-29. The purpose of mounting the slicker shafts for vertical 7 adjustment is to permit the slickers 25-25 being elevated as the empty molds pass therebeneath, thereby preventing damage to either or both slickers and molds by grind ing contact between these members. This is accomplished in the manner fully described and illustrated in my said Patent No. 1,498,614 dated June 24, 1924.

The molds 43-13 of which there are two pairs, are formed in two parts 51 and 52 which may for convenience be termed the base and upper sections respectively. The base or lower sections 51 are provided with ledges or flanges 102 at each end which are embraced by inverted U-shaped yoke members 53-58 which are bolted to the extended ends of the side plates 200 of the upper section by means of bolts 201 extending through the side plates and through the legs of the yoke members 53-53. Transverse members or cross heads 55-55 are bolted to the legs of the members 53-53 by means of bolts 56 and the two sections are connected together by vertically disposed bolts 57-57 which pass loosely through the cross heads 55-55 and through the flanges or ledges 102, lock nuts 58 permitting of the two sections of the mold being adjusted toward or away from each other to vary the thickness of the bricks as will be more fully described hereinafter. Nuts 203 on the lower ends of the bolts 57-57 support the lower section 51 when the mold is in Figure 6 or upright position.

The lower section 51 is formed with upstanding plungers 59 which project partially into the brick molding compartments 60 of the section 52. These plungers receive the charge of mud from the hoppers 5 and 6 and also serve to eject the finished brick after the slicking operation, as will be described hereinafter.

Bearings 61-61 are bolted respectively to the inverted U-shaped members by means of F the bolts 56 previously referred to. These bearings receive and have keyed therein the inner ends of short stub shafts 68-63" which in turn are journaled in the mold supporting arms 24-24.. The stub shafts 63 of one pair of molds have keyed thereon at one end spoked wheels st and the stub shafts 63 of the second pair of molds have keyed thereon spoked wheels 64 at non adjacent and opposite-handed ends by means of which wheels the molds are oscillated at predeten mined intervals to dump the molded bricks, as will also be explained more in detail further on.

Depending from the frame 1 are two pairs of arms 65-65 to the lower ends of which are secured containers 66-66 adapted to hold in nested or superposed relation a plurality of pallets 67, which are deposited at predetermined intervals upon the top of the upper sections 52 of the molds after a charge of mud has been dropped into the compartments 00 and upon the upper enlarged end of the plungers 59. This is accomplished by ineansof pairs of upper rack bars 68-68 slidably mounted in the frame and engaging respectively the top of gears 69-69 mounted in uprights 70-70 adjacent each end of the frame 1. These rack bars carry pivoted dogs 71-71 at their inner ends which engage the lowermost one of the nested pallets and move the same on to the molds during the travel of the carriage. Movement of the rack bars 68-68 in a reverse direction to the movement of the carriage 17 is caused by pairs of lower rack bars 72-72 fixed to the carriages and supported by the uprights 7070 in engagement with the under side of the gears 69-69. As the stroke of the carriage is greater than the length (and stroke) of the pallet, lost motion is provided by means of adjusting nuts 72-72 on the l (l l) rack bars, adapted to be engaged by the ears 210-210 on the molds, it being understood that the rack bars 72-72 are free to r th ough thwarts, h di anc be ween the two adjusting nuts.

The pallets 67 are clamped to the upper section 52 of the molds by means of latch arms 74: pivoted as at I75 to opposite ends of the mold and connected together by toggle links 7 6 and coilsprings 7 7.

The pallet latches are actuated and the molds rotated by the following mechanism.

.; Mounted on the floor orother suitable base 2 are pairs of brackets T878 (one on each side of the machine) in which are mounted for vertical sliding movement plunger rods 797 9 connected by cross arms 8080, upon each of which are mounted a pair of spaced rollers 81 -81. These rollers are engaged by cams 82-82 mounted, on shafts 83-1-88 journaled in suitable bearings 8l8t in turn supported on the base 76 by I beams 107. The shafts 83.83 are driven by sprocket whee-ls 85 85 connected to any suitable source of power (not shown). Connected to the rods 79 m, by means of brackets 86.86 are upright rack bars 87.87', the teeth of which engage the spoked wheels ti l-64 and rotate the molds when the shafts 8383 are actuated. The upper and lower pins 87 and 88 on the rack bars :87 also serve to actuate the pallet latches in a manner hereinafter described.

Rope conveyors 8888 which are for conveying the molded bricks away from the machine, are mounted on grooved wheels 89-89 fixed to shafts 90-90 supported in uprights 91 91, the shafts 9 090 being driven from any suitable source of power (not shown) connected with pulleys 9292'. Assuming that the carriage 17 has been propelled to the left as far as it will go (Figure 1 posit'on) by anysuitable source of power (not shown) the first pair of molds will .have been filled by the discharge of mud from the hoppers and will have passed beneath the first pair of slickers.

' As these filled molds pass beneath the slickers during the slicking operation, the latch arms will be in open or A posltion, Fig. 8, so as not to interfere with the shckmg operation, and the rack arms 87 for turning the molds and-actuating thelatch arms will be in lowermost position. The source of power not shown) for driving the shafts 83 is now set in motion causing the rack arms 87 and plunger rods 79 to start on their upward strokev and at the same time the pivoted dogs 71 engage the lowermost pallets 67 in the pallet container 66 and move the latter towards the approaching molds. As the pallets are deposited upon the upper sections 52 of the first pair of molds, the upper pins 87 of the rack arms 87 engage toggle arms 74%, causing the latter to move upwardly-from dead center or horizontal position, thus permitting the coil springs tosnap the toggle armsto olQSQd position position Figure 8) .and into ,engagement with the pallets. At this time the rack bars 87 are just beginning to turn the molds by reason'of the engagement of the teeth on the rack bars with the first spoke of the spoked wheels 64'.

Continued upward movement of the rack bars 87 causes the filled molds to rotate about their horizontal axis to inverted po-p .sition position Figure 8), where themolds are locked against'turning movement in either direction by means of spokes e and f engaging the blank face of the rack bars 87. In this position the plunger rods 79 engage beneath the pallets on the inverted molds, and the lower pins 88 on the rack bars again engage the toggle arms 76, which in turn cause the latch arms 74 to move to open position (see pos'tion D. Figi ure 8). The direction of rotation of the shafts 83 is now reversed by any suitable switch mechanism (not shown), and the pallets 67 with their load of bricksQT resting upon the plunger rods 79 will be lowered to the rope conveyors 88-88 (see E position Figure 8) which conveyors carry the pallets and bricks to any desired pont or depository (not shown).

The ejection of the bricks from the mold compartments automatically takes place as the molds are oscillated to dumping posi tion, that is when D position l igure 8 is reached and movement toward E position commenced. This is caused by the section 51, of the mold dropping by gravitytowards section 52, thereof, it being noted that the section 51, is free to move with the threaded bolts 5757, the cross heads 55555 serving as guides during this movement. This movement of the section 51, precipitates the plungers 59, through the mold compartments 60, thereby ejecting the bricks therefrom, onto the rope conveyors.

The upper section 52, comprises the side plates 200, which overlap the yoke members 53-53', and the transverse part'tions 204 extending between the plates 200 and forming the mold compartments 60. The space between the yoke members forms a pocket or space 205 in which the partitions 204 seat.

As the bricks from the first set of molds are deposited upon the rope conveyors, a charge of mud will be delivered to the second set of molds, whereupon the carriage 17 which has been momentarily halted by any suitable switch mechanism (not shown) will then be caused to move in an opposite direction or to the right, thereby carrying the second set of molds which have just been filled, beneath the first pair of slickers at which point the carriage is again halted before and then proceeds to the I'igl'ltlliltll the first set of molds have been moved into alinement with the hoppers, and the second set of molds are above the plunger rods 79'79. Pallets will now have been moved into covering position upon the upper sections 52 of the second set of molds, whereupon the power mechanism for elevating the plunger rods 79-79, actuating the pallet latch arms, and rotating the second set of molds will be set in motion and the cycle of operation completed. It will of course be understood that the molds will be lowered into contact with the pedestals A5 and 46 coincident with the discharge of mud into the molds, by virtue of the notches 49 and :30 in the carriage rails coming into register with the rollers 1515' and 1616. Also that the slicker shafts will be raised and lowered at proper intervals as more clearly described and illustrated in my aforesaid copending application.

Having thus described my invention what I claim is:

1. A machine for making brick comprising a frame, a carriage mounted for travel to and fro upon said frame, a mold support on said carriage having laterally projecting ends, molds pivotally connected to said ends, alternately arranged slickers and discharge hoppers in the path of said molds for successively depositing mud into said molds and slicking the brick formed therein, and mechanical means for rotating said molds after they have passed the slickers to facilitate removal of the brick therefrom.

A machine for making brick comprising a frame, a mold pivoted to said frame comprising upper and lower sections connected together but capable of relative limited movement towards and away from each other, said upper section being formed with brick compartments, and said lower section having plungers projecting into said compartments and forming a support for the bricks, a pallet for said mold, means for latching said pallet to said upper section, plunger rods for receiving the pallet and bricks when said mold is moved to inverted position, means for actuating said plunger rods, and means on one of said rods for rotating said mold to inverted position, said last mentioned rod also provided with means for unlatching said pallet latching means.

3. In a brick making machine a mold comprising upper and lower sections connected together, for relative movement toward and away from each other, said upper section being formed with a plurality of brick forming compartments, and said lower section having plungers projecting upwardly into said compartments, means for moving the mold to inverted position to permit said lower section to drop by gravity towards said upper section to facilitate compartments, and means for rotating said mold to permit said sections to automatically move tOWaI'ds each other.

5. A brick making machine comprising a frame, a carriage mounted for travel to and fro upon said frame, a mold pivotally supported on said carriage, an alternately arranged slicker and discharlge hopper arranged in the path of said mold for successively depositing mud into said mold and slicking the brick therein, means for depositing a pallet upon said mold after the mold has passed the slickers, means for clamping the pallet to the mold, and means for simultaneously rotating said mold to inverted position and releasing said pallet clamping means.

6. A brick making machine comprising a frame, a carriage mounted'for travel to and fro upon said frame, a brick mold supported on said carriage, a discharge hopper and an alternately arranged slicker in the path of said mold for successively depositing mud into said mold and slicking the brick formed therein, a pallet hopper also arranged in the path of said molds, and mechanical means for placing a pallet upon said mold after the mold and brick therein have passed beneath the slicker.

7. A brick makinlg machine comprising a frame, a carriage mounted for travel to and fro upon said frame, a brick mold supported on said carriage, a discharge hopper and an alternately arranged slicker in the path of said mold for successively depositing mud into said mold and slicking the brick formed therein, a pallet hopper also arranged in the path of said molds, and mechanical means for placing a pallet upon said mold after the mold and brick therein have passed beneath the slicker, said means comprising a pair of rack bars actuated by said carriage, one of said bars connected to the carriage and the other of said bars -slidably mounted in the frame and having a pallet engaging dog thereon, and an idle gear with which said bars engage to cause the bars to move in opposite directions.

8.- A brick makinlg machine comprising a frame, a carriage mounted for travel to and fro upon said frame, a brick mold supported on said carriage, a discharge hopper and an alternately arranged slicker in the path of said mold for successively depositing mud the mold into said mold and slicking the brick formed therein, a pallet hopper also arranged in the path of said molds, and mechanical means for placing a pallet upon said mold after and brick therein have passed beneath the slicker, said means comprising a pair of rack bars actuated by said carriage, one of said bars connected to the carriage, and the other of said bars slidably mounted in the frame and having a pallet engaging dog thereon, and an idle gear with which said bars engage to cause the bars to move in opposite directions, and means permitting the carriage to move a predetermined dist-ance before the rack bars are actuatedthere- 9. A brick making machine comprising a frame; a carriage mounted for travel to and fro upon said frame, a brick mold sup ported on said carriage, a discharge hopper and slicker alternately arranged in the path of said mold for successively depositing mud into said mold and slicking the brick formed therein, a pallet hopper and a plurality of nested pallets therein also arranged in the path of said mold, and means actuated by the carriage for transferring one of said pallets onto the top of said mold and brick therein as said carriage and mold approach said pallet hopper after the slicking operation.

10.' A brick makinlg machine comprising a frame, a carriage mounted for travel to and fro upon said frame, a brick mold supported on said carriage, a discharge hopper and slicker alternately arranged in the path of said mold for successively depositing mud into said mold and slicking the brick formed therein, a pallet hopper and a plurality of nested pallets therein also arranged in the path of said mold, and means actuated by the carriage for transferring one of said pallets onto the top of said mold and brick therein as said carriage and mold approach said pallet hopper after the slicking operation, an endless conveyor and mechanical means for depositing said pallet and brick upon said conveyor.

In testimony whereof I afix my signature in presence of two Witnesses.

R. P. M. DAVIS, lVitnesses F. L. AROHEY, V. L. HALLETT. 

